.. index:: pair: group; Check loopback mode
.. _doxid-group__ethtool-loopback:

Check loopback mode
===================

.. toctree::
	:hidden:

Check that loopback mode works correctly.



#. If supported, disable source pruning on **iut_if** to be able to get packets with its own MAC address

#. Enable loopback on **iut_if**

#. Prepare traffic template to be transmitted

#. Ensure that **iut_if** is up

#. Create CSAP and start to receive packets on **iut_if**

#. Create CSAP and start to receive packets on **tst_if**

#. Transmit packet by template via **iut_if**

#. Check that no packets are received on **tst_if**

#. Check that sent packet is received on **iut_if** via loopback

Ilia Ismailov `ilia.ismailov@oktetlabs.ru <mailto:ilia.ismailov@oktetlabs.ru>`__



.. rubric:: Parameters:

.. list-table::
	:widths: 20 80

	*
		- env

		- 
		  Testing environment:
		  
		  * :ref:`env.peer2peer <doxid-group__env-peer2peer>`

	*
		- tmpl

		- Traffic template